JP6183233B2 - Card edge connector - Google Patents

Description

  The present invention relates to a card edge connector.

  Conventionally, a card edge connector that can be connected to a mating connector provided with a circuit board is known (for example, described in Patent Document 1 below). The card edge connector includes a housing into which the end edge of the circuit board provided in the mating connector is inserted, and the housing has terminal fittings that are electrically connected to the circuit board by contacting the end edge of the circuit board. Is retained.

JP 2012-022945 A

  By the way, in the card edge connector as described above, when a vibration is applied from the outside in a fitting state with the mating connector, the contact between the terminal fitting and the edge of the circuit board may rattle in the contact direction. Concerned. In particular, when the housing is divided into a front holder for holding the front end portion of the terminal fitting and the housing main body, the degree of rattling is increased, and the contact may be separated to increase resistance. Because of this, measures were desired.

  The present invention has been completed on the basis of the above circumstances, and can suppress vibrations in the contact direction between the terminal fitting and the edge of the circuit board, thereby improving vibration resistance. An object of the present invention is to provide a simple card edge connector.

The card edge connector of the present invention has a housing into which an end edge of a circuit board provided in a mating connector is inserted, and is held in contact with the end edge of the circuit board held by the housing. A terminal holder to be connected, and the housing has a front holder for holding a contact portion of the terminal fitting with an edge of the circuit board, and the front holder is assembled and the mating connector is A housing body to be fitted, and the front holder has a front terminal accommodating portion for accommodating the contact portion in the terminal metal fitting, and an edge of the terminal metal fitting and the circuit board with respect to the housing main body. part have a resiliently press against which the elastic pressing pieces abutting the same direction with, between the outer peripheral surface of the said elastic pressing piece front terminal accommodating portion, Serial in which the deformation spaces elastic pressing piece is allowed to flex elastically in the front terminal receiving portion is provided.

  According to the present invention, even if the housing is divided into the front holder and the housing main body, the elasticity in the same direction as the contact direction between the terminal fitting generated in the elastic pressing piece and the edge of the circuit board is provided. Because of the force, rattling in the same direction of the front holder is suppressed, so rattling in the contact direction between the terminal fitting and the edge of the circuit board can be suppressed, and the card edge connector's vibration resistance performance Can be improved.

The front view which is the harness side connector in a present Example, and shows the state by which the terminal part of the circuit board was inserted in the board insertion part It is sectional drawing which shows a harness side connector, Comprising: Sectional drawing corresponded in the cross section in the AA position of FIG. Sectional drawing which shows a harness side connector, Comprising: Sectional drawing corresponded in the cross section in the BB position of FIG. Perspective view showing the front holder Front view showing the front holder Rear view showing the front holder Plan view showing the front holder Side view showing the front holder

In the card edge connector of the present invention, the housing body may be provided with a cylindrical portion that covers the outer peripheral side of the front holder, and the elastic pressing piece may be pressed against the inner surface of the cylindrical portion. .
According to such a configuration, since the elastic pressing piece is accommodated in the cylindrical portion of the housing body, it is possible to prevent the elastic pressing piece from being exposed to the outside.

In the card edge connector of the present invention, the elastic pressing piece may extend in a cantilevered manner toward the rear in the assembly direction of the front holder with respect to the housing body.
According to such a configuration, when the front holder and the housing main body are assembled, the tip of the elastic pressing piece does not hit the housing main body, so that the tip of the elastic pressing piece hits the housing main body and is damaged when assembled. Can be prevented.

In the card edge connector of the present invention, the front holder is provided with a board insertion portion into which an edge portion of the circuit board is inserted, and a portion of the front holder along the longitudinal direction of the board insertion portion is provided. The rib may be provided, and the rib may be disposed at a position corresponding to the elastic pressing piece.
According to such a structure, the rigidity of the part along the longitudinal direction of a board | substrate insertion part can be improved with a rib, and also the excessive bending of an elastic pressing piece can be prevented with a rib.

<Example>
Hereinafter, an embodiment embodying the present invention will be described in detail with reference to FIGS.
The card edge connector in the present embodiment is a harness side connector H that can be fitted to a board side connector (mating side connector) S. The board-side connector S is obtained by holding the circuit board 11 on the board-side housing 10 made of synthetic resin without being loose. Electronic parts and the like (not shown) are mounted on the upper and lower surfaces (front and back surfaces) of the circuit board 11, and circuits are formed by printing. The edge portion of the circuit board 11 is a terminal portion 12 that is connected to the terminal fitting 23 provided in the harness side connector H, and a plurality of contact portions (not shown) constituting the circuit are provided on both the upper and lower surfaces. Are arranged in parallel. The circuit board 11 is held in the board-side housing 10 in a state in which the terminal portion 12 protrudes forward (forward in the fitting direction with the harness-side connector H side). Hereinafter, in each component, the side of the mating surface with the board-side connector S (left side in FIG. 2) will be referred to as the front, and the upper side in FIG.

  The harness-side connector H includes a housing 20 in which the terminal portion 12 of the circuit board 11 provided in the board-side connector S is loosely fitted, and a circuit board that is held by the housing 20 and abuts on the terminal portion 12 of the circuit board 11. 11 and a plurality of terminal fittings 23 that are electrically connected to each other.

  The terminal fitting 23 is formed into an elongated shape in the front-rear direction as a whole by bending a metal plate material punched into a predetermined shape (see FIG. 2). A front side portion of the terminal fitting 23 is a connecting portion 24 connected to the terminal portion 12 of the circuit board 11. The connecting portion 24 has a generally well-known box shape as a whole, and an abutting portion 25 that can elastically abut against the terminal portion 12 of the circuit board 11 protrudes outward from the box-shaped portion. The rear side portion of the terminal fitting 23 is a well-known crimping portion 26 to which a terminal portion of the electric wire W constituting the wire harness is crimped.

  The housing 20 is made of synthetic resin, and the outer shape of the housing 20 as a whole is a flat shape in which the height dimension (the dimension in the vertical direction) is set slightly smaller than the width dimension and the front-rear dimension. The housing 20 is provided with a board insertion part 21 in which the terminal part 12 of the circuit board 11 is loosely fitted, and a plurality of cavities 22 in which the terminal fittings 23 are accommodated and held. The cavities 22 are provided in two stages, that is, an upper side and a lower side of the substrate insertion portion 21, and a plurality of the cavities 22 are arranged side by side at a predetermined pitch in the width direction.

  The housing 20 includes a front holder 30 that holds a contact portion 25 that can contact the terminal portion 12 of the circuit board 11 among the terminal fittings 23, and a housing main body 50 to which the front holder 30 is assembled.

  The housing main body 50 is provided with a terminal accommodating portion 51 in which a plurality of terminal fittings 23 are accommodated. The terminal accommodating portion 51 is provided with a terminal insertion portion 52 into which the terminal fittings 23 are individually inserted, penetrating in the front-rear direction. The terminal insertion portion 52 constitutes most of the cavity 22.

  As shown in FIG. 3, a locking projection 54 that locks a locking claw 39 provided on the front holder 30 described later is provided on the outer peripheral surface of the terminal accommodating portion 51. The locking protrusions 54 are provided on both outer side surfaces of the terminal accommodating portion 51 in the width direction. The locking projection 54 is provided at a position near the front end of the terminal accommodating portion 51.

  The front surface of each locking projection 54 is a guiding surface 55 that is inclined so as to guide the climbing of the locking claw 39 of the front holder 30. Further, the rear surface of each locking projection 54 is a locking surface 56 that is provided on the outer peripheral surface of the terminal accommodating portion 51 so as to be locked with the locking claw 39.

  On the outer peripheral surface of the terminal accommodating portion 51, there is a position corresponding to each terminal insertion portion 52 (on the upper surface side in the upper terminal insertion portion 52 and on the lower surface side in the lower terminal insertion portion 52). A lance 57 is formed to lock the inserted terminal fitting 23 and prevent it from coming off (see FIG. 2). Each lance 57 is formed in a cantilever shape and extends forward, and its front end is engaged with the connection portion 24 of the terminal fitting 23. Each lance 57 is formed on the outer peripheral wall of the terminal accommodating portion 51 and can be elastically bent in the inner and outer directions of the terminal accommodating portion 51 (direction intersecting the insertion direction of the terminal fitting 23 with respect to the terminal inserting portion 52). The front and the outside of the lance 57 are open, and the lance 57 is exposed on the front side and the outside of the terminal accommodating portion 51.

  On the rear side of the terminal accommodating portion 51 in the housing main body 50, a batch rubber plug (not shown) that collectively seals the periphery of the plurality of wires W in a liquid-tight manner, and a rearward release of the batch rubber plug. An accommodation cylinder 58 is provided in which a rear holder (not shown) for prevention is accommodated.

  The housing body 50 is provided with a cylindrical portion 59 that protrudes forward in a cylindrical shape that surrounds the outer peripheral side of the terminal accommodating portion 51. The cylindrical part 59 is connected to a position closer to the rear end than the center in the front-rear direction of the terminal accommodating part 51, and covers the front side part thereof (see FIG. 2). The cylindrical portion 59 protrudes further forward than the front end of the terminal accommodating portion 51, and the portion protruding to the front side is a connector fitting portion 61 in which the board-side connector S can be fitted from the front. Yes. In the fitted state of the board-side connector S and the harness-side connector H, the board-side housing 10 and the housing body 50 are loose in the vertical direction (the contact direction between the terminal fitting 23 and the terminal portion 12 of the circuit board 11). It is said that almost no sticking occurs.

  A lock arm 62 that locks the harness-side connector H and the board-side connector S in a proper fitting state is provided on the upper surface of the tubular portion 59. The lock arm 62 is a fixed portion 63 whose middle portion in the front-rear direction is fixed to the cylindrical portion 59, and seesaw in the vertical direction (the direction intersecting the fitting direction with the board side connector S) with the fixed portion 63 as a fulcrum. It can be elastically deformed.

  A plurality of groove portions 64 are formed on the inner peripheral surface of the cylindrical portion 59. Each groove portion 64 is formed on the inner side by partially protruding the cylindrical portion 59 outward (see FIG. 1). Each groove portion 64 is formed in a portion corresponding to the connector fitting portion 61, and extends from the front end of the tubular portion 59 to a position slightly ahead of the fixing portion 63 of the lock arm 62 (see FIG. 2). ).

  The groove portion 64 is provided on the inner surface of both side walls in the width direction of the cylindrical portion 59 and the inner surface of the lower wall. One groove portion 64 is provided on each of the inner surfaces of both side walls of the cylindrical portion 59 at approximately the center in the vertical direction, and a pair of groove portions 64 are provided on the inner surface of the lower wall at a predetermined interval in the width direction. (See FIG. 1). A seal ring (not shown) fitted to the outer peripheral surface of the board-side connector S is in close contact with a portion of the inner peripheral surface of the cylindrical portion 59 that is behind the groove portion 64. .

  The front holder 30 is pushed into the cylindrical portion 59 from the front and assembled to the front side of the terminal accommodating portion 51. The front holder 30 has a shape that is disposed on the front side and the outside of the lance 57 provided in the terminal accommodating portion 51, and has a function of protecting the lance 57. The entire front holder 30 is accommodated in the cylindrical portion 59, and the entire outer peripheral surface is covered with the cylindrical portion 59.

  The front holder 30 includes a front terminal accommodating portion 31 that accommodates the front end portion (contact portion 25) of the terminal fitting 23, and a peripheral wall portion 32 that surrounds the terminal accommodating portion 51 of the housing body 50 in the circumferential direction.

  The front terminal accommodating portion 31 of the front holder 30 has a plurality of end accommodating chambers 33 for individually accommodating the front end portions (contact portions 25) of the terminal fittings 23 corresponding to the terminal insertion portions 52 of the housing body 50. Is provided. The end accommodating chamber 33 constitutes the front end of the cavity 22. The front end of the end accommodating chamber 33 is closed by the front wall. The terminal fitting 23 and the end portion accommodating chamber 33 are assumed to have little rattling in the vertical direction (the contact direction between the terminal fitting 23 and the terminal portion 12 of the circuit board 11).

  The front terminal accommodating part 31 is provided with a board insertion part 21 into which the terminal part 12 of the circuit board 11 is loosely fitted with a slight displacement allowed in the vertical direction. The substrate insertion portion 21 is provided between the upper end accommodating chamber 33 and the lower end accommodating chamber 33, and has a rectangular shape elongated in the direction in which the end accommodating chambers 33 are arranged in each step (the width direction of the front holder 30). It is opened forward (see FIG. 1) in a shape (shape in which the vertical dimension is smaller than the width dimension). A board stopper 34 that abuts against the end surface of the terminal part 12 of the circuit board 11 is provided at the back end (rear end) of the board insertion part 21.

  The partition wall 35 provided between the end portion storage chamber 33 and the substrate insertion portion 21 is provided with a communication port 36 that communicates between each end portion storage chamber 33 and the substrate insertion portion 21. The contact portion 25 of the terminal fitting 23 accommodated in each end portion accommodating chamber 33 protrudes toward the board insertion portion 21 via each communication port 36. The abutting portion 25 is held in a state of being elastically in contact with the contact portion of the terminal portion 12 of the circuit board 11 inserted into the substrate inserting portion 21.

  A locking piece 37 that locks to the housing body 50 is provided on the peripheral wall portion 32 of the front holder 30 (see FIG. 3). The locking pieces 37 are provided on both sides of the front holder 30 in the width direction. On both sides of the locking piece 37, slits 38 are formed extending elongated from the rear end of the front holder 30 toward the front, so that the locking piece 37 can be elastically deformed inward and outward of the peripheral wall portion 32.

  A locking claw 39 that locks to the locking projection 54 of the housing main body 50 is formed at the rear end of the locking piece 37. The locking claw 39 is provided inside the locking piece 37. When the locking claw 39 is locked in the front-rear direction with respect to the locking projection 54 of the housing body 50, the front holder 30 and the housing body 50 are held in the assembled state.

  A plurality of ribs 41 are provided on the upper and lower surfaces of the front holder 30 to prevent deformation of portions along the longitudinal direction of the substrate insertion portion 21 (portions disposed above and below the substrate insertion portion 21) (see FIG. (See FIG. 5). Each rib 41 is configured to extend long in the front-rear direction from the front end of the front holder 30 toward the rear (see FIG. 4). The plurality of ribs 41 are arranged at substantially equal intervals in the width direction of the front holder 30 (longitudinal direction of the substrate insertion portion 21). The plurality of ribs 41 provided on the upper surface side of the front holder 30 and the plurality of ribs 41 provided on the lower surface side are aligned in the width direction of the front holder 30.

  Among the plurality of ribs 41, the predetermined rib 41 is disposed at a position corresponding to an elastic pressing piece 43 described later. Specifically, a pair of adjacent ribs 41 are arranged directly below each elastic pressing piece 43 provided on the upper surface side of the front holder 30, and each elastic pressing piece 43 provided on the lower surface side of the front holder 30 is arranged. A pair of adjacent ribs 41 is arranged directly above.

  Between the adjacent ribs 41, lance relief portions 42 that allow elastic deflection to the outside of the lance 57 formed in the housing body 50 are provided (see FIGS. 4 and 7). Each lance relief portion 42 opens through the peripheral wall portion 32 in a vertical direction at a position corresponding to the lance 57. By providing the lance relief portion 42, the lance 57 can be elastically bent outward from the outer peripheral surface of the terminal accommodating portion 51. Since the bending space of the lance 57 is secured outside the terminal accommodating portion 51 as described above, the housing 20 is reduced in size as compared with the case where the bending space of the lance is secured inside the terminal accommodating portion, for example.

  Now, the front holder 30 has an elastic pressing piece 43 elastically pressed against the housing body 50 in the vertical direction (direction parallel to the contact direction of the terminal fitting 23 and the terminal portion 12 of the circuit board 11). A plurality are provided (see FIG. 2).

  A pair of elastic pressing pieces 43 are provided on the upper and lower surfaces of the front holder 30 (see FIG. 4). The elastic pressing piece 43 provided on the upper surface side of the front holder 30 and the elastic pressing piece 43 provided on the lower surface side are symmetric with respect to the substrate insertion portion 21.

  Each elastic pressing piece 43 extends in a cantilevered manner from the support portion 44 connected to the rear end portion of the front holder 30 toward the front (rear in the assembly direction of the front holder 30 with respect to the housing body 50). Yes. The front end of each elastic pressing piece 43 protrudes slightly forward from the front surface of the front terminal accommodating portion 31 (see FIG. 7). Each elastic pressing piece 43 has a rectangular plate shape that is long in the front-rear direction as a whole, and its width dimension (dimension in the short direction) is a dimension that just spans between a pair of adjacent ribs 41.

  In the natural state, each elastic pressing piece 43 includes an obliquely extending portion 45 extending obliquely from the support portion 44 toward the outer front side, and substantially horizontal from the front end of the obliquely extending portion 45 toward the front (of the front terminal accommodating portion 31). And a flat extension 46 extending substantially parallel to the outer peripheral surface. A bent portion 47 is formed on the outer surface of each elastic pressing piece 43 at the boundary between the obliquely extending portion 45 and the flatly extending portion 46. The obliquely extending portion 45 is configured such that the thickness dimension (dimension in the bending direction) gradually increases from the support portion 44 side toward the front. The flat extension portion 46 has a substantially constant thickness dimension.

  Between each elastic pressing piece 43 and the outer peripheral surface of the front terminal accommodating portion 31, a bending space 48 that allows the elastic pressing piece 43 to elastically bend inward (front terminal accommodating portion 31 side) is provided. ing. The bending space 48 is narrowest on the support portion 44 side and gradually increases toward the flat extension portion 46, and the flat extension portion 46 has a constant interval.

  In a state where the front holder 30 is assembled to the housing body 50, each elastic pressing piece 43 is elastically bent inward (flexible space 48) by contact with the tubular portion 59 as shown in FIG. It will be hold | maintained and will be in the state pressed against the inner surface of the cylindrical part 59 by this elastic restoring force.

Next, an example of the assembly procedure of the harness side connector H will be described.
First, the front holder 30 is assembled to the housing body 50. The front holder 30 is pushed from the front into the tubular portion 59 of the housing body 50 with the front end of the elastic pressing piece 43 facing the front side (rear side in the assembly direction).

  Then, at the initial stage, the elastic pressing piece 43 does not contact the inner surface of the cylindrical portion 59 and proceeds to the back in a natural state. Specifically, the pair of elastic pressing pieces 43 provided on the upper surface side of the front holder 30 advances in the bending space below the lock arm 62, and the pair of elastic pressing pieces 43 provided on the lower surface side are respectively Since it progresses in the groove part 64 provided in the lower surface side of the cylindrical part 59, it progresses in the natural state which is not elastically bent.

  Then, when the rear end portion (front end portion in the assembly direction) of the front holder 30 exceeds the fixing portion 63 of the lock arm 62, all the elastic pressing pieces 43 start to contact the inner surface of the tubular portion 59. . First, the substantially central portion in the front-rear direction of the obliquely extending portion 45 of the elastic pressing piece 43 comes into contact with the inner surface of the cylindrical portion 59, and the elastic pressing piece 43 moves to the inner side (front side) as the front holder 30 advances further back. It is elastically bent toward the side close to the terminal accommodating portion 31. At this time, the elastic deflection amount of the elastic pressing piece 43 increases little by little due to the inclination of the obliquely extending portion 45, and accordingly, the force by which the elastic pressing piece 43 presses the inner surface of the cylindrical portion 59 also increases little by little.

  Eventually, the vicinity of the bent portion 47 of the elastic pressing piece 43 comes into contact with the inner surface of the tubular portion 59, the obliquely extending portion 45 becomes nearly horizontal and the flatly extending portion 46 is slightly inclined inward. Then, the front holder 30 is further pushed in, and eventually reaches a proper assembly position (see FIG. 2). At this time, the rear surface of the partition wall 35 of the front terminal housing portion 31 of the front holder 30 abuts against the front surface of the partition wall 53 of the terminal housing portion 51 of the housing body 50, and the pushing of the front holder 30 is stopped. Further, the locking piece 37 of the front holder 30 abuts against the guide surface 55 of the locking projection 54 of the housing main body 50, and by the inclination, the locking piece 54 gets over the locking projection 54 relatively smoothly and is elastically restored. The locking claws 39 are locked to each other in the front-rear direction. Thereby, the front holder 30 and the housing main body 50 are locked in a regular assembled state.

  At this time, all of the elastic pressing pieces 43 are strongly pressed against the inner surface of the cylindrical portion 59, and the upper elastic pressing pieces 43 are pressed against the inner surface of the cylindrical portion 59, so that the front side The holder 30 is pressed downward, and the lower elastic pressing piece 43 is pressed against the inner surface of the cylindrical portion 59 so that the front holder 30 is pressed upward. When the elastic pressing piece 43 is pressed against the inner surface of the cylindrical portion 59, the upward force and the downward force acting on the front holder 30 are equal, and the front holder 30 has a vertical force. It works almost evenly and well-balanced. As a result, the front holder 30 is held in the cylindrical portion 59 without shaking in the vertical direction with respect to the housing main body 50, and the position thereof is held substantially at the center without being biased to one side in the vertical direction. When the front holder 30 and the housing body 50 are in a properly assembled state, there is a predetermined gap between the rear end surface of the front holder 30 and the back end surface of the tubular portion 59.

Next, the terminal fitting 23 is inserted and accommodated in the housing 20 in which the front holder 30 and the housing body 50 are assembled. The terminal fittings 23 are sequentially inserted into the terminal insertion portion 52 of the housing body 50 from the rear. The terminal fitting 23 moves forward in the terminal insertion portion 52, and after the connection portion 24 has bent the lance 57 outward, the front end portion is accommodated in the end portion accommodating chamber 33 of the front terminal accommodating portion 31. Thus, the front end portion of the terminal fitting 23 is accommodated in the end portion accommodating chamber 33, and most of the terminal fitting 23 except for the front end portion is accommodated in the terminal insertion portion 52, and is entirely accommodated in the cavity 22. At this time, the portion of the terminal fitting 23 where the contact portion 25 is formed is in the vertical direction with respect to the front terminal accommodating portion 31 (end portion accommodating chamber 33) (the abutting direction with respect to the terminal portion 12 of the circuit board 11). It is said that it will not rattle. In addition, the contact portion 25 of the terminal fitting 23 accommodated in the end portion accommodating chamber 33 is in a state of protruding from the communication port 36 to the board insertion portion 21. At this time, the lance 57 is elastically restored and locked to the connecting portion 24 so that the terminal fitting 23 is prevented from coming off.
Thus, the assembly work of the harness side connector H is completed.

Next, an example of a fitting operation between the harness side connector H and the board side connector S will be described.
The terminal portion 12 of the circuit board 11 is oriented toward the harness-side connector H, and the board-side connector S is fitted to the tubular portion 59 of the harness-side connector H from the front. Then, the terminal portion 12 of the circuit board 11 is inserted from the front so that all the contact portions 25 protruding from the upper surface side and the lower surface side of the substrate insertion portion 21 are opened in the vertical direction.

Then, when the harness-side connector H and the board-side connector S reach a proper fitting state, the contact portions 25 of the upper terminal fitting 23 and the lower terminal fitting 23 are respectively connected to the terminal portions 12 of the circuit board 11. The contact portion on the upper surface and the contact portion on the lower surface are in elastic contact with each other, and the circuit board 11 and the terminal fitting 23 are connected in a normal connection state. Further, the lock arm 62 is engaged with the lock portion 13 of the board-side connector S, and the harness-side connector H and the board-side connector S are locked in a proper fitting state.
Thus, the fitting operation between the harness side connector H and the board side connector S is completed. At this time, the housing main body 50 of the harness-side connector H and the board-side housing 10 and the circuit board 11 of the board-side connector S are rattled in the contact direction between the terminal fitting 23 and the terminal portion 12 of the circuit board 11. It is in a state that does not occur.

Next, operations and effects of the embodiment configured as described above will be described.
The harness-side connector H of this embodiment has a housing 20 in which the terminal portion 12 of the circuit board 11 provided in the board-side connector S is loosely fitted, and is held by the housing 20 and comes into contact with the terminal portion 12 of the circuit board 11. Thus, the housing 20 includes a front holder 30 that holds a contact portion of the terminal fitting 23 with the terminal portion 12 of the circuit board 11, and the front holder 30. And a housing body 50 into which the board-side connector S is fitted. The front holder 30 has an elastic pressing piece 43 that is elastically pressed against the housing body 50 in the vertical direction (the same direction as the contact direction between the terminal fitting 23 and the terminal portion 12 of the circuit board 11). doing.

  According to this configuration, even if the housing 20 is divided into the front holder 30 and the housing main body 50, the elastic pressing piece 43 exerts an elastic force in the vertical direction on the front holder 30, and this elastic force Thus, rattling of the front holder 30 in the vertical direction is suppressed. Therefore, even when vibration is applied from the outside to the harness-side connector H and the board-side connector S in the normally fitted state, the vertical contact of the contact portion between the terminal fitting 23 and the terminal portion 12 of the circuit board 11 is rattled. Therefore, the vibration resistance performance of the card edge connector can be improved.

  The housing body 50 is provided with a cylindrical portion 59 that covers the outer peripheral side of the front holder 30, and the elastic pressing piece 43 is pressed against the inner surface of the cylindrical portion 59. According to this structure, since the elastic pressing piece 43 is accommodated in the cylindrical part 59 of the housing main body 50, it can prevent that the elastic pressing piece 43 is exposed outside.

  Further, the elastic pressing piece 43 extends in a cantilevered manner toward the rear in the assembly direction of the front holder 30 with respect to the housing body 50. According to this configuration, when the front holder 30 and the housing main body 50 are assembled, the tip of the elastic pressing piece 43 does not hit the housing main body 50, so that the tip of the elastic pressing piece 43 hits the housing main body 50 during assembly. Damage can be prevented.

  Further, the front holder 30 is provided with a board insertion part 21 into which the terminal part 12 of the circuit board 11 is inserted, and a rib 41 is provided in a portion of the front holder 30 along the longitudinal direction of the board insertion part 21. The rib 41 is disposed at a position corresponding to the elastic pressing piece 43. According to this configuration, the rib 41 can increase the rigidity of the portion along the longitudinal direction of the substrate insertion portion 21, and the rib 41 can prevent excessive bending of the elastic pressing piece 43. That is, the rib 41 serves as a reinforcing means for the board insertion portion 21 and an excessive deflection preventing means for the elastic pressing piece 43.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above-described embodiment, the present invention is applied to the card edge connector in which the terminal fitting 23 is in contact with both the front and back surfaces of the circuit board 11. The present invention can also be applied to a card edge connector that is in contact with only one of both surfaces.
(2) In the above embodiment, the housing body 50 is provided with the cylindrical portion 59 that covers the outer peripheral side of the front holder 30, and the elastic pressing piece 43 is pressed against the inner surface of the cylindrical portion 59. However, the present invention is not limited to this, and the elastic pressing piece may be pressed against the outer surface of the housing body.
(3) In the above embodiment, the elastic pressing piece 43 is cantilevered toward the rear in the assembly direction of the front holder 30 with respect to the housing main body 50. The elastic pressing piece may extend in a cantilevered manner toward the front in the direction of assembly of the front holder with respect to the housing body, or may have a both-end shape in which both ends are fixed to the housing body.
(4) In the above embodiment, the ribs 41 are provided on the upper and lower surfaces of the front holder 30, but the rib 41 is not necessarily provided, and the shape and arrangement of the ribs are not limited to the above embodiment. Any shape and arrangement may be used.
(5) In the above embodiment, a pair of elastic pressing pieces 43 are provided on the upper surface and the lower surface of the front holder 30, but the elastic pressing pieces are not limited to this, and the elastic pressing pieces are only the upper surface or the lower surface of the front holder. The elastic pressing pieces may be provided one on each surface, or three or more elastic pressing pieces, and the number of elastic pressing pieces may be different for each surface.

H ... Harness side connector (card edge connector)
S ... Board side connector (mating side connector)
11 ... circuit board 12 ... terminal part (edge part of circuit board)
DESCRIPTION OF SYMBOLS 20 ... Housing 21 ... Board | substrate insertion part 23 ... Terminal metal fitting 30 ... Front holder 41 ... Rib 43 ... Elastic pressing piece 50 ... Housing main body 59 ... Cylindrical part

Claims (4)

A housing into which the edge of the circuit board provided in the mating connector is inserted;
A terminal fitting that is held in the housing and is electrically connected to the circuit board by contacting the edge of the circuit board;
The housing includes a front holder that holds a contact portion of the terminal fitting with an edge portion of the circuit board, and a housing body to which the front holder is assembled and the mating connector is fitted.
The front holder is elastic in the same direction as the contact direction between the terminal fitting and the edge of the circuit board with respect to the front terminal housing portion in which the contact portion of the terminal fitting is accommodated and the housing body. to press to have a devoted elastic pressing piece,
A card edge connector in which a bending space is provided between the elastic pressing piece and the outer peripheral surface of the front terminal accommodating portion to allow the elastic pressing piece to elastically bend toward the front terminal accommodating portion .   The card edge connector according to claim 1, wherein the housing body is provided with a cylindrical portion that covers an outer peripheral side of the front holder, and the elastic pressing piece is pressed against an inner surface of the cylindrical portion. A housing into which the edge of the circuit board provided in the mating connector is inserted;
A terminal fitting that is held in the housing and is electrically connected to the circuit board by contacting the edge of the circuit board;
The housing includes a front holder that holds a contact portion of the terminal fitting with an edge portion of the circuit board, and a housing body to which the front holder is assembled and the mating connector is fitted.
The front holder has an elastic pressing piece that is elastically pressed against the housing body in the same direction as the contact direction between the terminal fitting and the edge of the circuit board,
The elastic pressing pieces, the direction of Luca over de edge connector is intended to extend towards and cantilever rearward assembly of the front holder relative to the housing body. A housing into which the edge of the circuit board provided in the mating connector is inserted;
A terminal fitting that is held in the housing and is electrically connected to the circuit board by contacting the edge of the circuit board;
The housing includes a front holder that holds a contact portion of the terminal fitting with an edge portion of the circuit board, and a housing body to which the front holder is assembled and the mating connector is fitted.
The front holder has an elastic pressing piece that is elastically pressed against the housing body in the same direction as the contact direction between the terminal fitting and the edge of the circuit board,
The front holder is provided with a board insertion part into which an edge part of the circuit board is inserted,
A rib is provided in a portion along the longitudinal direction of the substrate insertion portion of the front holder,
The rib is disposed to have Luca over de edge connector at a position corresponding to the elastic pressing piece.

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